Airflow Entro-V Controls Operating manual

80001022 – Issue 2 01/22
Entro-V Controls
Part No: 90001308/90001299
BASIC CONTROLLER, DIGITAL CONTROLLER AND OTHER
CONTROL OPTIONS
User and installation manual
V1.2
01.11.2021

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Contents
PART I – GENERAL DEFINITIONS .......................................................................................................4
1. General Information .....................................................................................................................................4
1.1. Introduction..............................................................................................................................................4
1.2. Functions .................................................................................................................................................5
1.3. Product Description & Code ....................................................................................................................7
2. Control Board ...............................................................................................................................................8
2.1. Control board technical information ........................................................................................................8
2.2. Control board input / output.....................................................................................................................8
2.3. Control board alternatives .....................................................................................................................12
2.3.1. PWM control & TERMINAL connection (90001522) ..................................................................12
2.3.2. PWM control & SOCKET connection (90001315) .....................................................................14
3. Controllers ..................................................................................................................................................16
3.1. Basic Controller (90001308)..................................................................................................................16
3.1.1. Button .........................................................................................................................................16
3.1.2. LEDs...........................................................................................................................................17
3.1.3. Cable connection .......................................................................................................................17
3.1.4. Surface mounting .......................................................................................................................18
3.2. Digital Controller (90001299) ................................................................................................................19
3.2.1. Buttons .......................................................................................................................................19
3.2.2. Screenshots ...............................................................................................................................20
3.2.3. Cable connection .......................................................................................................................25
3.2.4. Surface mounting .......................................................................................................................26
4. Accessories ................................................................................................................................................27
4.1. Sensors .................................................................................................................................................27
4.1.1. Temperature Sensor (90001316)...............................................................................................27
4.1.2. Humidity Sensor (90001322) .....................................................................................................27
4.1.3. Carbon dioxide (CO2) Sensor (90001319) .................................................................................28
4.1.5. Pressure transmitter...................................................................................................................28
PART II – WORKING SCENARIO....................................................................................................... 29
1. Fan Speed Control......................................................................................................................................29
2. Boost Function ...........................................................................................................................................29
3. Filter Control ...............................................................................................................................................30
4. By-Pass & Rotor Control ...........................................................................................................................30

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4.1. By-Pass Control ....................................................................................................................................30
4.2. Rotor Control .........................................................................................................................................30
5. Heating & Cooling Control.........................................................................................................................31
5.1. Electric Heater Control [HT] ..................................................................................................................31
5.2. Water Coil Control [CW] ........................................................................................................................31
5.3. Heating-Cooling System with Refrigerant (DX System) [DX]................................................................32
6. Frost Protection [FRZ] ...............................................................................................................................32
7. Room Temperature Sensor Function [T_RO]..........................................................................................33
8. BMS Function .............................................................................................................................................33
8.1. External on/off control [BMS].................................................................................................................33
8.2. Status info (Run out) [RUN]...................................................................................................................33
8.3. Fault info (Fault out) [FLT].....................................................................................................................33
9. Modbus Function........................................................................................................................................34
9.1. Properties ..............................................................................................................................................34
9.2. Connection ............................................................................................................................................34
9.3. Modbus Function ...................................................................................................................................34
9.4. Modbus Register List.............................................................................................................................35
10. Timer Function..........................................................................................................................................37
11. Fire Scenario [FRE] ..................................................................................................................................37
12. Child Proof Protection Function .............................................................................................................37
13. Unit Status When Power On....................................................................................................................38
PART III – ALARM (Failure) ............................................................................................................... 39
1. Fault Info (Fault out) [FLT].........................................................................................................................39
2. Fault Code List............................................................................................................................................39
ANNEX.A – SERVİCE OPERATIONS ................................................................................................ 41
1. Basic Controller..........................................................................................................................................41
2. Digital Controller ........................................................................................................................................41
4. Register List ................................................................................................................................................44

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Abbreviations & Acronyms
AI
:
Analogue Input
AO
:
Analogue output
BMS
:
Unit run function (dry contact) (DI)
BST
:
“Boost” function (DI)
BYP
:
By-Pass damper (DO)
C_OA
:
Fresh air fan counter input (CI)
C_RA
:
Exhaust fan counter input (CI)
CI
:
Counter input
CW
:
Water coil
CWI
:
Water coil failure (freezing) info (DI)
CWO
:
Water coil (DO)
DI
:
Digital input
DO
:
Digital output
DX
:
DX System (Heating-Cooling System
with refrigerant)
DX1
:
DX system 1st stage (DO)
DX2
:
DX system 2nd stage (DO)
DXH
:
DX system refrigerant high-pressure info
(DI)
DXI
:
DX system failure (DI)
DXL
:
DX system refrigerant low-pressure info
(DI)
F_OA
:
Fresh air fan
F_RA
:
Exhaust air fan
FDF
:
DX system frost protection scenario
FI1
:
Mechanical filter pollution system 1 (DI)
FI2
:
Mechanical filter pollution system 2 (DI)
FLT
:
Unit fault info (DO)
FRE
:
Fire info (DI)
FRZ
:
Heat recovery frost protection scenario
FWV
:
DX system 4-way valve (DO)
HT
:
Heater
HT1
:
Heater 1st stage (DO)
HT2
:
Heater 2nd stage (DO)
HT3
:
Heater 3rd stage (DO)
HTI
:
Heater fault info (DI)
PH
:
Pre-heater
PH1
:
Pre-heater 1st stage (DO)
PH2
:
Pre-heater 2nd stage (DO)
PO
:
Power output
RF
:
Wireless with RF
RTR
:
Rotor (DO)
RUN
:
Unit run info (DO)
SDI
:
Service door info (DI)
SE1
:
Sensor 1 (AI)
SE2
:
Sensor 2 (AI)
SEA
:
Season info (DO)
T_OA
:
Outdoor air temperature
T_PA
:
Controller temperature
T_RA
:
Return air temperature
T_RO
:
Room temperature
T_SA
:
Supply air temperature
T_UV
:
UV lamp fault info
UVL
:
UV lamp (DO)

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PART I – GENERAL DEFINITIONS
1. General Information
1.1. Introduction
Lately, most of our life is spent indoors (at home, office, etc) and indoor air quality has become a
very important topic. To help reducing the indoor air pollution, heat recovery units have been designed.
Mechanical Ventilation with Heat Recovery (MVHR) ensures that the stale air is extracted from the indoor
environment, heat is recovered within the plate heat exchanger, and fresh filtered air is supplied
indoors being warmed-up within the heat recovery core at a requested temperature. Many design building
projects include heat recovery units being requested by the users. The biggest challenge in using
these units is the control system. The main difference between basic heating-cooling systems (fan-coil, duct
type fan, duct type indoor units, etc.) and ventilation units is that the ventilation units have two fans to control
(supply and extract fans). Both fans must be controlled separately in various operating conditions.
For instance, in some cases it may be requested to keep the ventilated environment to a positive
pressure (supply only) or a negative pressure (extraction only). In this case, it is required to set both
fans at different speeds or one fan on and the other fan off. Also, it is possible to adjust the
ventilation amount automatically depending on the amount of CO2 or moisture in these units, which
leads to saving energy, thanks to the on-demand ventilation. In addition, according to the latest building
regulations, the summer by-pass function is a requirement (the fresh air is bypassing the plate
heat exchanger, being supplied indoors directly). Thanks to the HRU Controller developed by our
company, all functions and safety requirements expected from a heat recovery unit can be met.
Different working scenarios have been created for customer's demands and control of different
ancillaries to be used with the units.

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1.2. Functions
Function Definition
Fan Speed Control
It provides control of the speed of fans.
•Manual: 3 steps fan speed control for EC or AC fans
oSingle fan mod
oIndividual speed control of the fans
•Automatic
oWith sensors (Humidity, CO2, etc.)
o
Constant volume or Constant pressure
Boost Function
It is used for increasing fan speed if necessary
•Manual: Boost button on Control controller
•Automatic: Dry contact on control board
Filter Function
It warns the user when the filters are dirty.
•Alternative-1: Depend on time
•Alternative-2: Pressure switch mechanically
By-Pass Function Filtered fresh air is supplied indoor without passing in heat exchanger.
Rotor Function It controls the motor of the rotor on/off in the ventilation units with rotor type
heat recovery exchanger.
Electric Heater Control
Function Electric post heater steps control.
Water Coil Control Function Water type Cooling or Heating/Cooling coil control.
Sensor Function
oHumidity sensor
oCO2sensor
oAir quality
oConstant flow
oConstant pressure
It
provides automatic speed control of device fans for different usage
conditions.
•Speed control according to the air
oWith the humidity sensor, the amount of humidity in the indoor air is
measured, and at high humidity values, the fan speed is increased and
the humidity is discharged.
oWith the CO2sensor, the amount of CO2in the indoor air is measured,
and by increasing the fan speed at high CO2values, more fresh air is
taken into the room, increasing the amount of O2and decreasing the
amount of CO2.
oWith the Air Quality sensor, the amount of particles and various gases
in the indoor air are measured and the quality of the ambient air is
increased by increasing the fan speed in response to the rise in any of
them.
•Stable working condition
oConstant flow function; It allows the device to operate at a certain air
flow rate. There may be changes in the air flow, especially depending
on the amount of pollution in the filter. Thanks to this feature, the device
will always work with the air flow rate set.
o
Constant pressure function; It is used to adjust the air flow in the
system, especially in VAV uses.
Refrigerant Heating-Cooling
System Control Function (DX
System)
It controls the heat recovery unit
with heat pump refrigerant system (DX
system).
Equipment such as compressor and 4-way valve are controlled.
For the safety of the DX system, gas high pressure, gas low pressure,
compressor gas outlet temperature and condenser frost protection are
controlled.

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Function Definition
Frost Protection Function
Heat exchanger frost protection
•Alternative-1: By-Pass damper
•Alternative-2: Fan speed control
•Alternative-3: Electric Preheater steps control
Preheater Function Electric preheater steps control for frost protection.
Room Temperature Function Enables selection of return air temperature or control controller temperature
as room temperature.
BMS Function
It allows simple control of the unit from a central control system and
monitoring of the situation.
•BMS: Unit can be on/off via dry contact on control board
•Run out: Information of “unit status”
•Fault out: Information of “fault”
Modbus Function It controls all functions of unit via PC or central control system.
Timer Function1Unit can be programmed to operate on certain periods of the week.
Log Function1All possible working options of the unit can be recorded.
Fire Function It is used for changing working status of the unit in case of fire.
Service Door
Thanks to a mechanical switch placed in the service door; When the service
door is opened, the device is stopped, thus preventing the service
personnel from being damaged by the mechanical parts.
Child-Proof Protection
Function
It is used to lock the key on control controller (keylock).
•Alternative-1: Manually
•Alterntaive-2: Automatically
Wireless Control It provides the connection of wireless (RF) control controller and wireless
room sensors to the unit.
IoT Function It allows the features of the unit to be followed over the internet.
Service Interface The unit provides adjustment of all operating parameters and functions.
1Works in “Digital Controller” and “Touch Controller”.

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1.3. Product Description & Code
Code Description Equipment view
90001522
Control board PWM control &
Terminal connection
(Part I – Section 2.3.1)
90001315
Control board PWM control &
Socket connection
(Part I – Section 2.3.2)
90001308 Basic controller
(Part I – Section 3.1)
90001299 Digital controller
(Part I – Section 3.2)
90001316 Temperature sensor
(Part I – Section 4.1.1)
90001322 Humidity sensor
(Part I – Section 4.1.2)
90001319 Carbon dioxide (CO2) sensor
(Part I – Section 4.1.3)

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2. Control Board
2.1. Control board technical information
Power supply : 230V AC ±15%, 50 ~ 60Hz
Power consumption : 5W (max)
Working condition : 0 ~ 50°C, %90RH (max) (no condensation)
Storage condition : -20 ~ 70°C
Electrical protection class : IP20
2.2. Control board input / output
There are 21 I/O ports on the Control Card. These; 2 analogue outputs, 5 analogue inputs, 2 digital outputs
(dry contact), 5 power outputs and 5 digital inputs (dry contact). Also, 7 I/O are assigned to a fixed task, other
I/Os are adjustable according to the structure of the device and user demands. More details can be found in
the table below.
I/O Code Status Description
AO FAN_OA PWM Fixed Fresh air fan PWM out
FAN_RA PWM Fixed Exhaust air fan PWM out
CI FAN_OA “tacho” Fixed Fresh air fan alarm input (counter input)
FAN_RA “tacho” Fixed Exhaust air fan alarm input (counter input)
AI
TER_OA Fixed Outdoor air temperature sensor input
TER_RA Fixed Return air temperature sensor input
TER_SA Fixed Supply air temperature sensor input
SE1 Register 185 Sensor input
SE2 Register 186 Sensor input
DO DO1 Register 157 Default: Run info [RUN]
DO2 Register 158 Default: Fault info [FLT]
PO
LP0 Register 159 Default: By-Pass [BYP]
LP1 Register 160 Default: Electric heater 1st stage [HT1]
LP2 Register 161 Default: Electric heater 2nd stage [HT2]
LP3 Register 162 Default: Electric preheater 1st stage [PH1]
LP4 Register 163 Default: Rotor [RTR]
DI
DI-1 Register 170 Default: Boost input [BST]
DI-2 Register 171 Default: BMS in [BMS]
DI-3 Register 172 Default: Fire alarm input [FRE]
DI-4 Register 173 Default: Heater failure info input [HTI]
DI-5 Register 174 Default: Filter alarm input [FIL]
AI : Analogue input
AO : Analogue output
CI: : Counter input
DI : Digital input
DO : Digital output
PO : Power output (230V)

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2.3. Control board alternatives
2.3.1. PWM control & TERMINAL connection (90001522)
Equipment view
Dimensions

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2.3.2. PWM control & SOCKET connection (90001315)
Equipment view
Dimensions

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3. Controllers
3.1. Basic Controller (90001308)
The Basic Controller was designed to allow the user to simply control all the basic
functions of the unit. There are 3 basic buttons and 4 LEDs on it.
Equipment view Dimensions
3.1.1. Button
Function Button Activity
Unit Start / Stop 1 Press for 3 seconds
To increase fan speed Press
To decrease fan speed Press
To activate “boost” function 2 Press
To reset the unit 3 Press for 3 seconds
To reset the duration of filter
contamination depending time 4Press for 3 seconds
To activate VOD mod 5 or Press for 3 seconds
Child lock Press for 3 seconds
1Cannot open or close if BMS (Part II – Section 8.1) is active
2Cannot change the fan speed if “Boost” function is active
3Reset works if the unit is off
4Cannot work if the unit has filter sensor
5If the VOD mode is active and sensor connected
Button
Fan speed
leds (blue)
Warning
led (red)

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3.1.2. LEDs
H M L ! Description
Unit powered off
Fan speed is “high”.
Fan speed is “med”.
Fan speed is “low”.
Fan speed is “boost”.
VOD mode is active.
Fire function is active.
Failure warning (see Part III).
Led is off Led is on Blink
3.1.3. Cable connection
Cable type: Flat (6x)
Maximum length: 20m

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3.1.4. Surface mounting
1
2
3
4
1
2
3

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3.2. Digital Controller (90001299)
The Digital Controller was designed to control all the functions of the unit and to
change settings related to the unit. It has 4 buttons and 1 graphic display.
Equipment view Dimensions
3.2.1. Buttons
Function Button Activity
Unit Start / Stop 1 Press for 3 seconds
To switch to screens in between. (If not
select anything on screen)
Next screen Press
Previous screen Press
To change any value on screen (If select
something on screen) Press
To increase existing value Press
To decrease existing value Press
To exit existing menu Press
To activate “boost” function 2 Press for 3 seconds
To reset the unit 3 Press for 3 seconds
To reset the duration of filter
contamination depending time 4Press for 3 seconds
To adjust screen brightness and contrast Press for 3 seconds
Child lock Press for 3 seconds
1Cannot open or close if BMS (Part II – Section 8.1) is active
Buttons
Graphic
LCD
Screen